| 词汇 | blast off | 
| 释义 | blast off  phrasal verb with blast verb uk/blɑːst/ us/blæst/  (火箭)发射 If a rocket blasts off, it leaves the ground to go into space. blast-off  noun [ U or S ] uk/ˈblɑːst.ɒf/ us/ˈblæst.ɑːf/  (火箭、导弹、太空飞船等的)发射 the moment when a spacecraft leaves the ground  Five seconds to blast-off! 距发射还剩5秒钟!  | 
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